Detail of GB/T 4842-2017

Introduction of GB/T 4842-2017

GB/T 4842-2017 Replaces GB/T 4842-2006 Argon 1 Scope This standard specifies the technical requirements, inspection rules, test methods, packaging, marking, storage, transport and safety warnings in connection with pure argon and high purity argon. This standard is applicable to gaseous and liquid pure argon and high purity argon extracted by cryogenic treatment from air or synthetic ammonia tail gas, as well as pure argon and high purity argon obtained through purification. 2 Normative references The following documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 150 Pressure vessels GB 190 Packing symbol of dangerous goods GB/T 3723 Sampling of chemical products for industrial use - Safety in sampling GB/T 5099 Seamless steel gas cylinders GB/T 5832.1 Gas analysis - Determination of moisture - Part 1: Electrolytic method GB/T 5832.2 Gas analysis - Determination of moisture - Part 2: Dew point method GB/T 6285 Determination of trace oxygen in gases - Electrochemical method GB/T 7144 Coloured cylinder mark for gases GB/T 8981 Determination of trace hydrogen in gases - Gas chromatographic method GB/T 8984 Determination of carbon monoxide carbon dioxide and hydrocarbon in gases - Gas chromatographic method GB/T 14194 Rules for filling of permanent gas cylinders GB 15258 General rules for preparation of precautionary label for industrial chemicals GB/T 16804 Precautionary labels for gas cylinders GB/T 24159 Welded insulated cylinders GB/T 28054 Bundles of seamless steel gas cylinders GB/T 28124 Determination of trace hydrogen, oxygen, methane and carbon monoxide in the inert gases - Gas chromatographic method GB/T 28726 Gas analysis - Gas chromatograph with helium ionization detector JB/T 4783 Road tankers for cryogenic liquid JB/T 6898 Cryogenic liquid storage and transportation equipment - Safety regulation for operation TSG D0001 Pressure pipe safety technology supervision regulation for industrial pressure pipe TSG R0005 Supervision regulation on safety technology for transportable pressure vessel TSG R0006 Supervision regulation on safety technology for gas cylinder 3 Technical requirements The technical requirements for pure argon and high purity argon shall comply with the requirements in Table 1. Table 1 Technical indexes for pure argon and high purity argon Item Index High purity argon Pure argon Argon (Ar) purity (volume fraction)/10⁻² ≥ 99.999 99.99 Hydrogen (H2) content (volume fraction)/10- ≤ 0.5 5 Oxygen (O2) content (volume fraction)/10-6 ≤ 1.5 10 Nitrogen (N2) content (volume fraction)/10-6 ≤ 4 50 Methane (CH4) content (volume fraction)/10-6 ≤ 0.4 5 Carbon monoxide (CO) content (volume fraction)/10-6 ≤ 0.3 5 Carbon dioxide (CO2) content (volume fraction)/10-6 ≤ 0.3 10 Moisture (H2O) content (volume fraction)/10-6 ≤ 3 15 Note: Moisture content determination is not required for liquid argon.

Contents of GB/T 4842-2017

Foreword i 1 Scope 2 Normative references 3 Technical requirements 4 Inspection rules 5 Test methods 6 Packaging, marking, storage, transport and safety warnings Annex A (Normative) Determination of the contents of hydrogen, oxygen and nitrogen in argon Annex B (Normative) Calculation on volume of argon Annex C (Informative) Safety warnings for argon